Liquid crystal display device, method for driving liquid crystal display device, and television receiver

摘要

At least one embodiment of a liquid crystal display device including: pixels each of which includes a plurality of sub-pixels; and scanning signal lines provided in a display area, the scanning signal lines being divided into groups each of which includes a plurality of scanning signal lines, the groups being sequentially selected, the polarity POL of signal electric potentials being inverted when the selected group is changed from a preceding group to a succeeding group which is selected immediately after the preceding group, a plurality of (for example, two) dummy scanning periods being inserted between a horizontal scanning period corresponding to last horizontal scanning (scanning of G23) in the preceding group and a horizontal scanning period corresponding to first horizontal scanning (scanning of G2) in the succeeding group, and a scanning signal line (for example, G2) which belongs to a group selected after the preceding group being subjected to dummy scanning during each dummy scanning period so as to be made active for a predetermined period of time, and then deactivated. With the arrangement, it is possible to suppress horizontal-shaped unevenness that occurs in a case where block inversion driving is carried out in a multi-pixel mode liquid crystal display device.

主权项

1. A liquid crystal display device comprising:
pixels each of which is provided in a display area and includes a plurality of sub-pixels; and scanning signal lines provided in the display area; the scanning signal lines being divided into groups each of which includes a plurality of scanning signal lines, the groups being sequentially selected, signal electric potentials of an identical polarity being sequentially supplied to a data signal line while scanning signal lines belonging to a selected group are sequentially scanned horizontally, the polarity of the signal electric potentials being inverted when the selected group is changed from a preceding group to a succeeding group, which is selected subsequent to the preceding group, a plurality of dummy scanning periods being inserted between a horizontal scanning period corresponding to a last horizontal scanning in the preceding group and a horizontal scanning period corresponding to a first horizontal scanning in the succeeding group, at least one scanning signal line, which belongs to a group selected after the preceding group, is subjected to dummy scanning during each dummy scanning period so that the at least one scanning signal line is made active for a predetermined period of time, and is then deactivated, the number of scanning signal line(s) to be made active during each dummy scanning period is the same as the number of scanning signal line(s) to be made active during each horizontal scanning period, each horizontal scanning period is equal in length to each of the plurality of dummy scanning periods, and during each of the plurality of dummy scanning periods, either (i) a different one of the scanning signal lines is subjected to the dummy scanning, or (ii) only a same one of the scanning signal lines is subjected to the dummy scanning.